MTN’s 4.5TB Yearly Plan once reigned supreme for unstoppable data usage. Now, it’s discontinued. Find out why the code *312*137# no longer works, how this affects power users, and the best ways to source multi-terabyte data in 2025.

4.5 terabytes—4,608GB—was MTN’s largest publicly advertised consumer data plan. It catered to extremely high bandwidth needs: large enterprises, serious content creators, or individuals streaming 4K content daily. With one purchase, you got enough data for a full year. This plan’s discontinuation is arguably the biggest sign of MTN’s pivot away from extended mega-deals.

Confirmation of Removal

• USSD Code *312*137#: Now defunct. Dialing yields “Invalid request.”
• MyMTN NG App: The “4.5TB Plan” is nowhere to be found.
• No Official Replacement: Like the other yearly plans, it simply vanished as part of the product suite overhaul.

How It Worked Pre-February 13

• Price: Typically above ₦800,000, sometimes nearing ₦1,000,000, given the magnitude of data.
• Validity: 365 days from activation—no monthly recharges needed.
• Purchase Channels: Special listings on the MyMTN App or direct USSD if you had enough airtime or a linked card/MoMo account.

The Old MB Rate

If 4.5TB cost ₦900,000, for instance:

• 4.5TB = 4,608GB = 4,718,592MB
• ₦900,000 / 4,718,592MB ≈ ₦0.19 per MB

That was on par with or even cheaper than smaller long-term deals, representing a huge discount per MB—provided you could afford the hefty upfront cost.

Rationale for Discontinuation

• Niche Demand: Few people or SMEs realistically needed 4.5TB in a year or had the capital to pay upfront.
• Revenue & Pricing Strategy: Letting a small group lock in such a low cost per MB for an entire year might cut into MTN’s dynamic pricing profits.
• Simplicity: Eliminating ultra-long, high-volume deals streamlines the standard data offerings.

Why the Code No Longer Works

*312*137# was tied directly to the 4.5TB product ID. With that product removed from MTN’s catalog, the code simply returns an error or no response. No alternative plan is offered automatically.

Potential Alternatives for Multi-Terabyte Needs

Once again, you’re left to piece together multiple smaller data packages:

1. Monthly 250GB
• If you buy it monthly, you get 3,000GB per year for ₦660,000. That’s still less than 4,608GB, and you’ll spend monthly.
2. 2-Month 200GB
• If each is ₦50,000, you get 1,200GB in 12 months from six purchases—far short of 4.5TB. Doubling that is 2,400GB at ₦100,000 every 4 months (totaling 3 cycles for 12 months = ₦300,000), still nowhere near 4.5TB.
3. Combine Plans
• You might buy multiple monthly packages or a mix of monthly/2-month to ramp up to multi-terabyte usage. The cost will be significantly higher than the old single-lump plan’s rate.

FAQ from Power Users

• “How do I replicate 4.5TB for a year?”
• You’ll need numerous monthly or 2-month recharges, which is typically more expensive.
• “Why is *312*137# giving me an error?”
• The plan no longer exists.
• “Is there any advantage to smaller monthly purchases?”
• Flexibility. If you only need 4.5TB once or you don’t use it fully, you can scale down some months.
• “Could it come back?”
• Possibly in a promotional capacity, but there’s no standard offering for multi-terabyte annual plans at present.

The Cost Factor

At ~₦0.19 per MB, 4.5TB was among the cheapest data deals in Nigeria if you calculated purely by cost per MB. By removing it, MTN effectively ensures no customers lock in that extremely low rate for a full year, which can help them respond to inflation or regulatory changes in pricing.

Beyond 4.5TB: Enterprise Solutions

Anyone requiring more than 4.5TB likely has enterprise-level demands. MTN might direct them to special corporate solutions or dedicated internet lines. However, these are rarely found on consumer USSD menus and usually require direct liaison with MTN’s business arm.

Constructing a Multi-TB Approach

If you truly need over 4TB in a year:

1. Monthly 250GB x 16 = 4,000GB for ~₦880,000, spread over 16 months. For a single year, you’d buy 12 or 13 times, netting 3,000–3,250GB at ~₦660,000–₦715,000—still short of 4.5TB.
2. Mix 2-Month 200GB: Even a double monthly approach is unlikely to exceed 2–3TB without paying well above ₦600,000.
3. Consider If You Need That Much: Realistically assess usage. Perhaps you can make do with less or vary your plan monthly.

Conclusion

The 4.5TB Yearly Plan was a monstrous data offering that signified the absolute pinnacle of consumer data consumption. Its removal slams the door on easy, bulk-year data solutions at an ultra-low MB rate. Now, you’ll likely pay more or adopt multiple smaller renewals if you remain a data-hungry user.

Key Takeaway: If you once thrived on 4.5TB per year, you’ll need to combine monthly or 2-month deals to approach the same volume—almost certainly at a higher cost. Keep an eye on enterprise-level or promotional deals if you foresee maintaining such high usage.